What is the approximate total length of iron edging needed to create the square frame and the two diagonals?

Last year, a state university received 3,560 applications from boys. of those applications, 35 percent were from boys who lived in other states. part a)how many applications did the university receive from boys who lived in other states? part b)applications to the university from boys represented 40percent of all applications. how many applications did the university receive in all? i don't how to do part b so me and plz tell how you got your answer

Me complete this proof! prove that a quadrilateral is a square. me with the steps for this proof.

What is negative 3/9 times negative 2/8 ?